Valley cover gasket V8 petrol engine-new part

VALLEY COVER GASKET V8 PETROL ENGINE-NEW PART

Model

Range Rover Discovery Defender

Affected vehicles

All V8 petrol derivatives from VIN LH 644747 - LJ 071711 and LD 936297

Date

1994-03-11

Reference

11/03/94

Bulletin text

SUBJECT Valley Cover Gasket V8 Petrol Engine - New Part Introduction

MODEL AFFECTED VEHICLES

Range Rover All V8 petrol derivatives from VIN LH 644747 - LJ 071711 Discovery Defender and LD 936297

DETAIL

To improve the sealing integrity of the inlet manifold to cylinder head joint a new valley gasket has been introduced together with a revised fitting process. The new material construction is a steel inner plate with a black/grey rubberised facing.

The new part is directly interchangeable with the previous part and should be used in instances of gasket sealing integrity is in question on the previous part.

ACTION REQUIRED

In the event of customer complaint associated with a leak from the inlet manifold joint, fit the new gasket following the procedure identified. If a leak develops from the new gasket please submit a Product Report providing full vehicle details and area of leak.

PARTS INFORMATION

New Inlet Manifold Gasket ERR 4923 Loctite Superflex (See bulletin 131/93 for supplier details)

PROCEDURE

NOTE: Refer to section 12 of the Workshop Manual for repair and removal instructions. 1) Ensure all surfaces are free from dirt and degrease the area shown in 2 below. 2) Apply a small amouunt of Loctite Superflex Sealant to the four notches created by the cylinder head to block joint. (Refer to Bulletin 131/93 for supplier details). Ensure that the sealant is confined to the area of application and should not be allowed to enter the tappet chamber.

Continued.....

11/03/94

12/05/94/EN

WARRANTY

Normal warranty policy and procedure applies.

COMP. CODE

2U1N

SRO

Range Rover, Discovery and Defender V8i and EFi 30.15.08 Valley gasket renew 02.05 hour

SUBJECT Valley Cover Gasket V8 Petrol Engine - New Part Introduction

MODEL AFFECTED VEHICLES

Range Rover All V8 petrol derivatives from VIN LH 644747 - LJ 071711 Discovery Defender and LD 936297

3) Install the manifold gasket end seals, ensuring that the seal ends fit securely in the notches created by the cylinder head to block joint. 4) Apply a globule of Loctite Superflex sealant on the top of the seal where it fits in the notches.

5) Place the valley gasket in position. 6) Fit the valley gasket clamps and tighten to 0.501.0 Nm (0.5-0.7 lbf ft). Do not fully tighten at this stage. 7) Place the inlet manifold on top of the gasket and fit the respective bolts to their locations as shown in the illustration opposite. Bolts with a length of 1 3/8 inches (35 mm) are fitted to inlet manifold holes numbered 1,2,3,4,5,6,7,8,9 and 12. Bolts with a length of 1 7/8 inches (48 mm) are fitted to inlet manifold holes numbered 10 and 11. 8) Check that the valley gasket, clamps and inlet manifold are correctly positioned and start each bolt into the cylinder heads.

NOTE: The bolts do not align at right angles to the manifold/head faces and this may give the illusion of misalignment.

11/03/94 12/05/94/EN

9) When tightening the inlet manifold bolts they should be tightened using the sequence shown in the illustration above. 10) Initially tighten all manifold bolts in the sequence shown to 10 Nm (7 lbf ft). 11) Secondly tighten all the manifold bolts in the sequence shown to 48-54 Nm (35-40 lbf ft) 12) Finally tighten the clamp bolts at the front and rear of the valley gasket to 14-20 Nm (10-15 lbf ft).

NOTE: Ensure that the clamps do not move during the tightening operation

13) Complete the re-assembly following the instructions in the Workshop Manual. 14) Start the engine, check for fluid/air leaks and correct throttle operation.